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Summary of Agreements by Topic
Resource Allocation for Power Saving
- Random Resource Selection:
- UE reports a fully initialized candidate resource set
(SA) when performing random resource selection.
- Re-evaluation and Pre-emption Checking:
- Clarified operations for periodic and aperiodic
transmissions.
- Reservation periodicity for re-evaluation and pre-emption
checking is defined.
- Periodic-Based Partial Sensing (PBPS):
- Sensing occasions for PBPS are clarified, including
additional periodic sensing occasions.
- Resource selection steps are based on decoded PSCCH and
measured RSRP.
- Candidate Slots for Partial Sensing:
- Clarified descriptions for Y and Y’ candidate slots in
partial sensing.
- Avoided zero values for Preserve in periodic-based
partial sensing.
- Half-Duplex Considerations:
- Addressed half-duplex constraints in re-evaluation and
pre-emption checking for partial sensing.
Inter-UE Coordination for Mode 2 Enhancements
- Scheme 1:
- Clarified cast types for inter-UE coordination
information transmission (unicast, groupcast, broadcast).
- Defined procedures for determining preferred and
non-preferred resource sets.
- Clarified UE-B’s behavior when using non-preferred
resource sets.
- Scheme 2:
- Clarified conditions for UE to be UE-B when scheduling
conflicting TBs.
- Addressed valid PSFCH occasions for resource conflict
information.
- Defined timeline for transmitting/receiving PSFCH with
control information.
- SCI Format 2-C:
- Clarified field descriptions and time offsets for
resource indication.
- Specified that SCI format 2-C can only be used for
unicast.
Miscellaneous Topics
- Power Control:
- Clarified sidelink power control parameters and
procedures.
- Addressed open-loop power control formulae for
PSCCH/PSSCH/PSFCH/S-SSB.
- Resource Selection Mechanisms:
- Clarified higher-layer indications for resource selection
mechanisms (e.g., full sensing, partial sensing, random selection).
- Duplicated Specification Text:
- Removed duplicated descriptions of UE procedures for
determining resource conflicts between TS 38.213 and TS 38.214.
- Editorial Corrections:
- Addressed misalignments and inconsistencies in RRC
parameter names and values across specifications.
Default CBR Configuration
- RAN1 recommended to RAN2 that the usage of default CBR
configuration for full sensing in Rel-17 remains unchanged compared to
Rel-16.
LS Discussions
- Cast Types for Scheme 1:
- RAN1 requested RAN2 to specify cast types for inter-UE
coordination information transmission.
- Default CBR Configuration:
- RAN1 clarified that case 3 is valid in both Rel-16 and
Rel-17.
- Non-Preferred Resource Set:
- RAN1 provided clarifications on UE-B’s behavior when
using non-preferred resource sets.
This summary captures the key agreements across topics
discussed during the maintenance sessions for NR sidelink enhancement.